The Regulus system as a whole is the twenty-first brightest star in the night sky with an apparent magnitude of +1.35.

apparent magnitude of

Wikipedia contributors. (2024, July 21). Regulus. In Wikipedia, The Free Encyclopedia. Retrieved July 31, 2024, from https://en.wikipedia.org/w/index.php?title=Regulus&oldid=1235754808

Regulus (Wikipedia) Regulus is the brightest object in the constellation Leo and one of the brightest stars in the night sky. It has the Bayer designation designated α Leonis, which is Latinized to Alpha Leonis, and abbreviated Alpha Leo or α Leo. Regulus appears singular, but is actually a quadruple star system composed of four stars that are organized into two pairs. The spectroscopic binary Regulus A consists of a blue-white main-sequence star and its companion, which has not yet been directly observed, but is probably a white dwarf. The system lies approximately 79 light years from the Sun.